Help getting script to work

Hi Everyone,

I am very new to scripting and I found this inventory script while reading a scripting page. Could someone tell me what I have to do to get it to work? I am getting the below error. Thank you in advance!

Argument <FileName> required. For example
cscript Inventory.vbs "c:\MyFolder\Inventory.xls"

The vbs script I am trying to use is off of this link:

http://www.rlmueller.net/Programs/Inventory.txt

When you run the script you have to give it the name of an Excel .xls file. You didn't.